Home / 12,992.02-17,928.75-7,955.44

Finding the Fourth Proportional to 12,992.02, 17,928.75 and 7,955.44

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Solution

The fourth proportional to 12,992.02, 17,928.75 and 7,955.44 is: 10,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992.02 : 17,928.75 = 7,955.44 : x
  2. Step 2: Convert to fraction form
    12,992.02/17,928.75 = 7,955.44/x
  3. Step 3: Cross multiply
    12,992.02x = 17,928.75 × 7,955.44
  4. Step 4: Simplify right side
    12,992.02x = 142,631,094.90
  5. Step 5: Solve for x
    x = 142,631,094.90/12,992.02
  6. Step 6: Final answer
    x = 10,978.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.